The Department of Electrical Engineering

Quantum mechanics has played an ever-increasing role in electronics over the past several decades. At first, materials and devices were introduced that were designed with quantum mechanical principles, but still operated on classical information (for example, the silicon transistor). More recently, devices have been developed to store and manipulate quantum bits of information (qubits) towards quantum computing applications. Until the past few years, however, these qubits have only been addressed with classical light signals. A fully quantum mechanical circuit, in which quantum mechanical microwave signals address quantum bits, enables scalable quantum computing architectures and makes possible a full range of quantum optics experiments, all on a single chip in an integrated circuit.